Process of remelting and refining old or scrap copper alloy.



' a higher metallieimpurlties of the metals which form 1 tion the flux dissolves or holds in suspension in the county tinrrnn srrrrns PATENT OFFICE.

wan-run, sj nocKEY AND HILLIARY METALLURGICAL ansnancn ELIDRIDGE, OF 'NEW YORK, N. Y., ASSIGNOBS TO COMPANY, A CORPORATION OF ARIZONA.

PROCESS or REMEL'IING- AND REFINING 0L1) on SCRAP COPPER ALLOY.

Specification of Letters latent. Application filed February 2, 1911.

No Drawing Serial No. 606,160.

To all whom 'it may concern:

Be it known that we, WALTER S. RooKEY and 'HILLIARY ELDRIDGE, citizens of the United States, both residing at New York, of New York and State of New York, have invented certain new and useful Improvements in Processes of Recopper alloy consisting in first reducing to a fluid condition'by heat a flux containing boron trloxid, and then submerging beneath fusing same beneath said flux causing said melting and Refining Old or Scrap Copper metal thus purifying the alloy metal beneath Alloy, of which the following is a full, the surface of said flux, and then adding clear, and exact specification. carbon to the flux to further reduce the metallic impurities contained in said flux.

2. The process of refining old or scrap Our invention relates to the art of remelting and refining old or scrap copper alloy. copper alloy consisting in first reducing to The object of our invention is to prea flued condition by heat a flux of boron vent the loss by volatilization and oxidatrioxld, and then submerging beneath said tion of the metals that form the alloy during fusion and to produce a copper alloy of degree of purity than has been heretofore attained by the elimination of the impurities from the old or scrap copper alloy. 7

In carrying .out our process 'of remeltmg and refining alloys, we first reduce to a fluid condition by heat, a suitable flux, preferably boron trioxid or one containing boron trioxid which has the property of dissolving or holding in suspension the oxide, and other flux the old or scrap copper alloy and fusing same beneath said flux causing said flux to dissolve or hold in suspension the metallic impurities contained in said scrap metal thus purifying the alloy metal beneath the surface of said flux, and then adding carbon to the flux to further reduce the metallic iu1- purities contained in said flux.

3. The process of refining old or scrap copper alloy consisting in first reducing to a fluid condition by heat a suitable flux having the quality of dissolving or holding in suspension the oxids, and other metallic inipurities contained by the metals which form the alloy, then submerging the old or scrap copper alloy and fusing same beneath said flux causing said flux to dissolve or hold in suspension the metallic impurities contained in said scrap metal thus purifying the alloy metal beneath the surface of said flux, and then adding carbon to further reduce the metallic impurities contained in said flux.

In testimony whereof, we afiix our signatures, in presence of two witnesses;

-WALTER S. ROCKEY.

HILLIARY ELDRIDGE. Witnesses:

G. F. QUAoKmBUsH, JOSEPH MATTES.

the alloy, and also serves the purpose ofprotecting during fusion the said copper alloys from oxidation and volatilizatipn. Having thus prepared a bath of thisfflux as described, we submerge beneath said flux the old or scrap copper alloy which fuses beneath said flux. During said fusing operathe metallicimpurities of the said copper alloy which are then reduced to the metallic state by the reducing action of carbon or its equivalent which is added to the flux. After this reduction is consummated, the metal is drawn off or poured out of the fusin receptacle and cast as may be desired.

aving thus described our invention what we claim is: t 1. The process of refining old or scrap Patented Mar. 5, 1912.

said flux the old or scrap copper alloy and F beneath said flux 

